Þróttur may refer to: Knattspyrnufélagið Þróttur, also known as Þróttur Reykjavík, a sports club based in Reykjavík, Iceland. Þróttur Neskaupstað, a multi-sport club based in Fjarðarbyggð, Iceland. Ungmennafélagið Þróttur, also known as Þróttur Vogum, a sports club based in Vogar, Iceland.